package com.techfengs.test01;

public class Test {
    public static void main (String[] args) {
        Chinese ch = new Chinese();
        System.out.println(ch.AGE);
        ch.say();

        American a = new American();
        System.out.println(a.AGE);
        a.say();

        Speak s = new Chinese();
        System.out.println(s.AGE);
        s.say();
    }
}
